Peavey CS 1000X manual 3A. BIAMP MONO MODE, Bridge Mode

each crossover having a balanced input (1 l), dual (parallel) unbalanced inputs (13), an unbalanced low output (15), and an unbalanced high output (16). In order to complete the system, external patching must be accomplished between the low and high crossover outputs and the various power amp inputs using shielded patch cords. A patch diagram showing this arrangement is included at the end of this manual.

3A. BIAMP MONO MODE

Obviously, for a monaural biamp system (only one mixer feed), only one crossover module is required and only one crossover island will be used. In this case, one channel of the CS 1000X can be patched for the lows and the other channel patched for the highs, resulting in a simple, compact system with outstanding performance.

CAUTION:

Since the CS 1000X is capable of producing more than 500 watts RMS per channel into a 4-ohm load, the high-frequency components of the particular loudspeaker system must be able to handle these power levels reliably. Alternatively, use a smaller power amplifier!

4. BRIDGE MODE

Diagram 4 shows the actual arrangement for the CS 1000X patch panel in the bridge mode. Notice that the jumper plugs are inserted in the transformer (12) and crossover (14) accessory sockets of Island A. These jumper plugs cause the XLR connector of this island to be wired in the unbalanced configuration (as in Diagram 1) and complete the connection to the Channel A power amp input jacks (which are now the only active inputs). The Channel A sensitivity control now determines the sensitivity of the bridge-mode ampli- fier. The Channel B input jacks and sensitivity control serve no purpose in this mode, and are actually electronically removed from the circuit. Both sets of parallel l/4” output phone jacks are also not normally used in the bridge mode. Remember, the 4-ohm minimum load must be connected between the red binding posts. If individual loads were connected to each output (as in normal stereo applications) when the bridge mode is selected, Channel A would supply a normal in-phase signal to its respective load, but Channel B would supply an abnormal out-of-phase signal to its respective load, and both of these signals would contain Channel A source material (Channel B source material, if present, would be defeated). This is a potentially dangerous situation, especially if the individual channels are being used to supply high and low signals in a typical biamp configuration. Obviously, the speaker components on Channel B would no longer be supplied their intended signal but an out-of-phase version of the Channel A signal, which could easily destroy the

TRANSFORMER

i i.

X-OVER
	SENSITIVITY
CHANNEL B INPUTS
AND SENSITIVITY
CONTROL AREDEFEATED		d BRIDGE	CONNECT LOAD
		4Elc.	BETWEEN RED
		&J+ ISTEREO	BINDING POSTS
			7OV/l OOV LINE

TRANSFORMER

	X-OVER
0	PATCH PANEL (BRIDGE MODE) WITH JUMPERS

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